The one-gluon exchange effects to of baryon semileptonic decay

Ushio, Kenichi; Konashi, Hiroshi

doi:10.1016/0370-2693(84)90317-4

Cited by 23 publications

(4 citation statements)

References 6 publications

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“…09, given previously in the bag model [3,6], the ratio improves significantly after considering the correction from the CMM.…”

Section: Transition Matrix Elementssupporting

confidence: 52%

“…In astrophysics, under the framework of the bag model, the strange stars, neutron stars and quark cores are viewed as large bags containing countless quarks [5]. In spite of these great progresses, the bag model has little application in the particle decay system, mainly due to the center of mass motion (CMM) [6]. This study is devoted to introduce the homogeneous bag model to provide a consistent framework to deal with the CMM.…”

Section: Introductionmentioning

confidence: 99%

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Center of mass motion in bag model

Liu¹,

Geng²

2022

Preprint

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Despite the great success on the mass spectra, the reputation of the bag model has been closely followed by the embarrassment from the center of mass motion. It leads to severe theoretical inconsistencies. For instance, the masses and the decay constants would no longer be independent of the momentum. In this work, we provide a systematical approach to resolve this problem. The meson decay constants as well as the baryon transition form factors can be computed consistently in our framework. Notably, the form factors in the neutron β decays do not depend on any free parameters, and are determined to bewhich is well consistent to the experimental value of (7.1 ± 1.7) × 10 −5 . These results show that our approach for the center of mass motion in the bag model is suitable for both light and heavy quark systems.

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“…09, given previously in the bag model [3,6], the ratio improves significantly after considering the correction from the CMM.…”

Section: Transition Matrix Elementssupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Center of mass motion in bag model

Liu¹,

Geng²

2022

Preprint

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“…It shifts total angular-momentum between spin and orbital contributions and, therefore, also contributes to model calculations of the octet axial-charges [24]. We denote this contribution, which has been evaluated to be 0.0373 [24,30] in the MIT Bag (without centre of mass corrections), as G.…”

Section: Process Measurement Su(3) Combination Fit Value Mit + Ogementioning

confidence: 99%

The nucleon's octet axial-charge g_A^8 with chiral corrections

Bass,

Thomas

2009

Preprint

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The value of the nucleon's flavour-singlet axial-charge extracted from polarised deep inelastic scattering is sensitive to the value of the octet axial-charge g (8)A which is usually taken from an analysis of hyperon β-decays within the framework of SU(3) symmetry, namely 0.58 ± 0.03. Using the Cloudy Bag model we find that the value of g (8)A is reduced by as much as 20% below the usual phenomenological value. This increases the value of the flavour singlet axial charge (g (0)A | inv ) derived from deep inelastic data and significantly reduces the difference between it and g (8)A .

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“…The fallacy of the additive quark models becomes apparent for the baryon magnetic moments where these quark models give the wrong inequality, i.e., for the measured magnetic moments |µ(Ξ − )| > |µ(Λ)| [2]. These "spin" problems of F and D and of the baryon magnetic moments are easily explained by invoking the same effective color magnetic spin-spin interaction that give the "bare" nucleon -"bare" ∆ mass splitting [16,17,18]. This effective interaction introduces dynamic spin-spin correlations in the baryon wave functions that not only resolves the F/D problem, F/D ≈ 0.57, i.e.…”

mentioning

confidence: 99%